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al_draw_polyline(3) Library Functions Manual al_draw_polyline(3) NAME al_draw_polyline - Allegro 5 API SYNOPSIS #include <allegro5/allegro_primitives.h> void al_draw_polyline(const float* vertices, int vertex_stride, int vertex_count, int join_style, int cap_style, ALLEGRO_COLOR color, float thickness, float miter_limit) DESCRIPTION Draw a series of line segments. * vertices - Interleaved array of (x, y) vertex coordinates * vertex_stride - the number of bytes between pairs of vertices (the stride) * vertex_count - Number of vertices in the array * join_style - Member of ALLEGRO_LINE_JOIN(3) specifying how to render the joins between line segments * cap_style - Member of ALLEGRO_LINE_CAP(3) specifying how to render the end caps * color - Color of the line * thickness - Thickness of the line, pass <= 0 to draw hairline lines * miter_limit - Parameter for miter join style The stride is normally 2 * sizeof(float) but may be more if the vertex co- ordinates are in an array of some structure type, e.g. struct VertexInfo { float x; float y; int id; }; void my_draw(struct VertexInfo verts[], int vertex_count, ALLEGRO_COLOR c) { al_draw_polyline((float *)verts, sizeof(VertexInfo), vertex_count, ALLEGRO_LINE_JOIN_NONE, ALLEGRO_LINE_CAP_NONE, c, 1.0, 1.0); } The stride may also be negative if the vertices are stored in reverse or- der. SINCE 5.1.0 SEE ALSO al_draw_polygon(3), ALLEGRO_LINE_JOIN(3), ALLEGRO_LINE_CAP(3) Allegro reference manual al_draw_polyline(3)
NAME | SYNOPSIS | DESCRIPTION | SINCE | SEE ALSO
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